Watching nearly all of our search visibility vanish overnight is a sickening thing, like flipping the breaker on a beautifully lit gallery and finding the whole room dead.
Some context: the site is an independent public agenda of classical music events in Madrid, Spain. Not an affiliate site, no ticket sales, no revenue whatsoever. The entire purpose is aggregating and verifying classical events straight from official venues, orchestras, cultural institutions, and other organizers so people can consult one clean, consistent calendar. every event page cites its sources and includes structured info like date, venue, performers, composers, and program when available.
Then on September 27, 2026, shortly after the September 2026 spam update began rolling out, Search Console showed traffic cratered by roughly 95 percent overnight. Independent PostHog analytics confirm this is not a Search Console reporting glitch. Only visitors arriving from Google collapsed, every other acquisition source held steady. The loss is sitewide too, not one formerly popular page sinking alone.
Technical checks, all clean:
- robots.txt allows crawling
- event pages carry no noindex
- canonicals are self-referencing
- the site is served over HTTPS
- canonical public URLs are present in the XML sitemap
- no broad redirect or robots change was deployed immediately before the drop
- pages remain accessible to users and other traffic sources
- individual event pages are used rather than marking up agenda/listing pages as single events
The timing lines up almost perfectly with Google's spam update, which began September 24. Google's spam policies have been reviewed closely, in particular scaled content abuse and scraping. yes, the site contains many event pages, but a comprehensive event calendar IS the product. Those pages are generated from genuine events and official sources, not churned out to chase arbitrary queries.
to anyone with an eye for this stuff, it's a labor-of-love resource, carefully curated and quietly elegant, and watching a year of that craft get painted as spam overnight stings badly.
so the ask: could anyone spot something in this implementation that might legitimately trip Google's spam systems? and what would it actually take to recover the previous search state?
Site: https://clasicamadrid.com/
Thank you!